Valve



Dec. 4 1923.

. A. H. MEYER 'VALVE File d Nov. '2. 1921 s Sheets-Sheet 1 INVENTOR Dec.4,- 1923. r 1,476,534

A. H. MEYER VALVE Fi'leq Nov. '7. 1921 3 Sheets-Sheet 2 INVENTOR Dec. 41923.

A. H. MEYER VALVE Filed Nov. '7. 1921 3 Sheets-Sheet 5 l I I I 1llLfilllllllllllalqu.

INVENTOR 044$ a Patented Dec. 4, 1923.

HT E D S T ADOLPH n. MEYER, or rrrrsnunen, rnNNsYtva m, ASSIG-NOR TO H.L. DIXON COMQ PANY, or CARNEGIE, PENNSYLVANIA, A oonronnrroN orPENNSYLVANIA.

VALVE.

Application filed November 7, 1921. Serial No; 513,290.

To all whom it may concern-.-

Be it known that I, Anonrn H. MEYER,

a citizen of the United States, residing at Pittsburgh, in the county ofAllegheny, State of Pennsylvania, have invented a new and usefulImprovement in Valves, of which the following is a full, clear, andexact description.

My invention relates to valves, and particularly toreversing valves. Myinvention comprehends a valve wherein the valve member is lifted andcarried from one position-to another and is counter-balanced by simplemeans which do not add materially to the weight of the structure, but

by reason of which the device is rendered easily operable.

My preferred structure includes two sets of substantially parallelguides or tracks between which is mounted a carriage provided withconnections whereby the hood is substantially counter-balanced by aspring and wherein cam surfaces'are provided on one of each set of saidguides or trackways for actuatinglink connections to lift the hood tothe top of the fines during the first period of its movement. A straightportion holds the hood in its lifted position during the second orintermediate part of its movement and cam surfaces allow, the

hood to be lowered during the third period i the guides or tracks,

Figure 3 is a view showing an end view of the valve, one half of whichis shown in section,

Figure 4 is a detail of one, of the members for operating the hood, and

Figure 5 is a side elevation of a modification showing the hood indotted outline in two. positions.

I have chosen to illustrate and describe 1 herein my inventionasapplied-to a gas rethe spring 23.

versing valve for use in connection with a gas-fired furnace.

Referrlng to the drawings, the reversing valve comprises a nozzle 1, acasing 2, a'

the fluid controlled by'the valve passes and by which the flow isreversed. The casing 2 1s provlded at each end" with doors 85 throughwhichaccess is given to-the interior construction for inspection orrepairs.

ATENT orric.

The mechanism for reversing the valve is divided, and duplicate partsare placed on each side of the casing. As these parts are identical,only onepart will now be described Members 5 shown in detail in Figure4, are attached to. the four-corners of the hood 4. The members 5 arebifurcated at one end and are pivotally' connected to first class levers6 bybolts 7 The levers 6 are pivotally connected, intermediate theirends, to the carrier bars 8 at 9-. The bars 8 are provided with rollers10 which run on guides or tracks; 11, supported bythe base 8. The otherends of the levers 6 -are pivotally connected to links 12, which in turnare connected to members 13 provided with rollers 1%, mounted on guidesor tracks 15. A link 16 is pivotally connected tothe members 13 andto anoperating lever 17 having a pivotal mounting 18.

The guide or track 15 is provided with V cam surfaces 19, 20, 21 and 22as best shown in Figure 2. The function of these cam surfaces will beexplained later. 4

A spring 23 is connected at its central portion tothe carrier bars 8 bymeans of the shackles 2 1. The ends of the spring 23 are connectedto'the links 6 by hanger bolts 25, provided with nuts 26for the purposeof adjusting the counter balancing efi'ect of It will be noted that theendsof the spring 23 are connected to the levers 6 between the pivotalpoints 7 and 9, and the spring, therefore, normally acts to lift thehood 4, thus counter-balancing the weight of the same. By adjusting thenuts 26-the hood 4 may be counter-balanced in sucha manner that verylittle eifortis required to lift-the same.

I I in detail.

.The interior of the casing 2 is lined with any suitable refractorymaterial 27 and the casing extends downwardly into the base 3, so thatits lower edge forms a water the ends of the hood 1 remain in the waterat all times, except during the movement of the hood 4 from one positionto another, and duringthis period they are not lifted asubstantial'distance above the surface of the water.

The base 3 is provided with three flues 29, 30 and 31. The flues 29 and31 are connected to the furnace through the flues 33 and the flue 30 isconnected to a chimney through the flue 3ft. The nozzle 1 isconnectedwith the fuel supply, or with any other gaseous fluid to be controlledby the valve. 7

A modification ofmy invention is shown in Figure 5. The parts of thedevice shown in Figure 5'are designated by the same-numerals ascorresponding parts in the other figures, except the numerals as appliedto Figure 5 have affixed thereto the exponent a.

The modification shown in Figure 5 is the same in all respects as thatshown in the other figures, except that the spring 23 and the means foroperatively connecting the spring are omitted from the device as shownin Figure 5. It will, therefore, be unnecessary to describe themechanism of Figure 5 The hood 4? is shown in double dotted linesconnecting the fine 29 with the chimney 30 and in chain linesconnectingthe flue 31 withthe chimney. position, the gaseous fluid enters throughthe nozzle 1, passes downwardly through flue 31 through a furnace orother device, and the products of combustion return through flue 29,pass under the member 4? and out to a chimney through flue 30. In thesecond position of the hood, the gaseous fluid enters through the nozzle1, passes downward through the flue 29 to a furnace or other-de vice,and the products of combustion return ,through the flue-33 and enter thevalve through flue 31 go underthe hood to flue .30 and to a chimneythrough flue 134:.

The operation of my valve is as follows:

If it is desired to move the hood'fromthe position shown in Figure 1 to.a position conflues 30 and 31 together, the op- The nectii the cratinglever 17 is moved to the, left.

movement of the lever 17 moves the member 1 '13 to the left and duringthe first period of the movement causes the rollers 14 to move on thecam surfaces 19 and 21. This causes In the first otal points 9, andproduces an upward movement of the outer ends of the levers 6 which inturn lift the hood through the members 5. The upward movement of thehood is such as to clear the tops of the flues 29, 30 and 31',

and during the second period of movement as the rollers 14: move overthe horizontal surfaces of the members 15, the hood is carried to theleft in a truly horizontal direction to connect the flues 30 and 31together and to uncover the flue 29. During the third period of movementof the hood the rollers 14; move along the cam surfaces 20' and 22,permitting an upward vmovement of the members 13 and a correspondingdownward movement of hood so that it operatively interconnects the flues30 and 31 and forms a water seal, and also uncovers the flue 29.

In order to reduce theeffort necessary to move the hood from oneposition to another the nuts 26 are so adjusted on the hanger bolts 25that the weight of the hood is substantially counter-balanced. It willbe apparent, therefore, that in moving'the hood from one position toanother it is only necesthe hood and that this is very easilyaccomplished by reason of the fact that the roll-' ers 14: operate uponthe gradually inclined cam surfaces 19, 20, 21 and 22.

In the modification shown in Fig. 5 the 'sary to overcome theunbalancedweight of operation is identical to that above described,except that in this form there is no' My invention has many advantages,among which may be noted that the hood is countermoved away from theflues only during the firstperiod of its movement and during theintermediate part or second period of its movement it' is moved parallelto a plane touching thetops of the flues and during the third period ofits movement it is moved toward the flues to operatively connect two ofthe same; this arrangement allows amovement of the hood from oneposition to another with minimum movement away from the topsof the fluesthus reducing the lifting effort and the clearance betweenjthe hood andthe ends of the flues to aminiinum.v Byreason of the foregoing featuresthe operating mechanism isof minimum weight and due to the relativelysmall weight, the device is easily operated. 7 r

Many changes may be made in the details of construction Withoutdeparting from the spirit of my invention.

I claim:

1. In a valve, a movable counterbalanced hood, a fixed track therefor,means for mov ing said hood along said track, and-means in fixed spacedrelation to said track and 00- operating therwith for imparting asubstantially vertical movement to said hood at the commencement andconclusion of its travel only, substantially as described.

2. In a valve, a movable hood, means for moving said hood verticallythroughout sep arated portions of its movement and in a truly horizontaldirection throughout the remainder of its movement, and a spring exerting a continuous upward lift on said hood for counterbalancing theweight thereof, suubstantially as described.

3. In a valve, a hood, a pair of tracks ex tending in substantiallyparallel relationship on each side 01 said hood, means co-opcrating withsaid tracks and traveling therebetween for shifting the hood laterally,and

means effective only at the initial and concluding movements of the hoodfor imparting a vertical movement thereto, substantially as described.

4:. In a valve, a hood, a pair of tracks extending in substantiallyparallel relationship on each side of said hood, means cooperating withsaid tracks and traveling therebetween for shifting the hood laterally,means carried by said first mentioned means for substantiallycounterbalancing the weight of the hood, and means effective only at theinitial and concluding movements of said hood for imparting a verticalmovement thereto, substantially as described.

5. In a valve, a hood, a pair of tracks ex tending in substantiallyparallel relation ship on each side of said hood, means cooperating withsaid' tracks and traveling therebetween for shifting the hood laterally,a spring carried by said first mentioned means for substantiallycounterbalancing the weight of the hood, and means efiective only at theinitial and concluding movements of the hood for imparting a raising orlowering movement thereto, substantially as described.

6. In a valve, a hood, a pair of tracks extending in substantiallyparallel relationship on each side of said hood, means cooperating withsaid tracks and traveling therebetween for shifting the hood laterally,said means including levers movable about axes fixedly carried by saidmeans, and means efiective at the initial movement of the hood only formoving one end of each of said levers to thereby lift the hood, saidlevers being automatically movable in the opposite direction-attheconcluding movement of said first mentioned means for thereby loweringthe hood, substantially as described.

at the initial movement of the hood only for moving one end of each ofsaid levers to thereby lift the hood, said levers being automaticallymovablein the opposite direction at the concluding movement of saidfirst mentioned means for thereby lowering the hood, and meanscooperating with said levers for normally counterbalancing the weight ofthe hood, substantially as described. I

8. In a valve, a hood, a pair of tracks extending in substantiallyparallel relationship on each side of said hood, ineanscooperating withsaid tracks and traveling therebetween for shifting the hood laterally,said means including levers movable about axes fixedly carried by saidmeans, means effective at the initial movement of the hood only for mov-111 one end of each of said levers to thereby li t the hood, said leversbeing automatically movable in the opposite direction at the concludingmovement of said first mentioned means for thereby lowering the hood,

and a spring carried by said first mentioned means and operativelysecured to said levers for normally counterbalancing the weight of thehood, substantially as described.

9. In a valve, a movable counterbalanced hood, a fixed track therefor,means for moving said hood along said track, and means cooperatin withsaid track for impartin substantlally vertical movement to sai hood atthe commencement and conclusion of its travel only, substantially asdescribed.

In testimony whereof I have hereunto set my hand.

' ADOLPH H; MEYER.

